As weather gets harder to predict, which iPhone weather app is best?

Weather apps from Apple, CNN, the Weather Channel, and Yahoo all have their advantages. Here’s how to know which is right for you. Ask people which app they use most frequently on their phones, and they re likely to pick one of five types: a messaging app , a maps app , a web browser, a clock app, or a weather app. If they go with a weather app, it could be one of many.